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Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest? New research suggests they are.
Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest? New research suggests they are.
The metamorphosed volcanic rocks are primarily basaltic in composition. Basalt is a common volcanic rock, while metamorphic rocks are those altered over time by heat and pressure. O’Neil said the ...